Terms

Primary Qualities

Galileo: Primary qualities are properties of the objects. Secondary qualities are purely in us, and nothing to do with the object at all.
Locke: Primary qualities are those properties of the object that cause a sensation in us which resembles the property in the object. Secondary qualities are those properties that cause a sensation in us which does not resemble the property in the object
http://www.davidchart.com/HPS/Topics/qualities.html